US3026148A - Adaptive brake pressure control - Google Patents

Adaptive brake pressure control Download PDF

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Publication number
US3026148A
US3026148A US97370A US9737061A US3026148A US 3026148 A US3026148 A US 3026148A US 97370 A US97370 A US 97370A US 9737061 A US9737061 A US 9737061A US 3026148 A US3026148 A US 3026148A
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US
United States
Prior art keywords
current
pressure control
output
pressure
detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US97370A
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English (en)
Inventor
Edgar J Ruof
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL275028D priority Critical patent/NL275028A/xx
Application filed by Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Priority to US97370A priority patent/US3026148A/en
Priority to GB43234/61A priority patent/GB936603A/en
Priority to DEG33861A priority patent/DE1247871B/de
Priority to FR889082D priority patent/FR1316144A/fr
Application granted granted Critical
Publication of US3026148A publication Critical patent/US3026148A/en
Priority to CH335162A priority patent/CH387462A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/0083—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots to help an aircraft pilot in the rolling phase
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
    • B60T8/1703—Braking or traction control means specially adapted for particular types of vehicles for aircrafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
    • B60T8/325—Systems specially adapted for aircraft

Definitions

  • This invention relates to apparatus for controlling the pressure applied to the wheel brakes of a hydraulic brake system to prevent application of such pressure as would cause the wheel to skid.
  • the invention may be advantageously employed in any hydraulic brake system having a metering control valve operated by an operator whether or not anti-skid means are incorporated in the system or not. It is particularly useful in connection with airplane brakes, although it may be used on other vehicles.
  • the present invention has for an object to supply mechanism which may, for example, be applied to an airplane hydraulic brake system whether equipped with anti-skid mechanism, or not, and which will sense variations in wheel velocity of a braked Wheel and will control thereby the possible pressure which can be applied to the brake so that highly efficient braking is made possible with absence of over braking.
  • Another object of the invention is to provide a hydraulic brake control which provides a shorter, smoother stop than prior types of similar apparatus, and which does not stress the control and brake means as severely as prior types of similar apparatus.
  • a further object is to supply such mechanism to an existing brake system without changes in the previous system except for installation of an additional brake pressure control valve in the pressure supply line at the brake cylinder.
  • Another object of the invention is to furnish a brake control, where a continuing, instantaneously operating control reflecting the braked wheel speed for gradual changes in the braking action is provided.
  • FIG. 1 is a block diagram of apparatus embodying the principles of the invention
  • FIG. 2 is a schematic electrical diagram of the control apparatus
  • FIGS. 3 and 4 are diagrams of modified control apparatus of the invention.
  • the numeral 1 designates a velocity detector in the form of a DC. generator directly driven by the wheel W to be braked and whose output voltage is directly proportional to the wheel speed and follows the wheel speed so closely that even short duration low-amplitude changes in voltage are representative of corresponding changes in wheel speed. Any change in wheel speed is considered to be an acceleration.
  • the numeral 2 designates an acceleration detector, including a capacitor, the output current of which is a measure of slowing of the wheel. Normal slowing of the wheel produces a useful capacitor discharge current from the acceleration detector, but such low current is usually allowed to escape through a variable bleeder 3.
  • the brake pressure control valve 5 is of the type in which the output pressure is a function of the electrical control current in the valve operating circuit and which may include a member, such as a solenoid therein. With this valve, if the input pressure is constant, the output pressure decreases almost linearly as the input current increases and when the input pressure changes, the output pressure changes almost linearly in the same direction. When a tendency to skid appears, a sudden increase in current from the acceleration detector 2 occurs which causes the pressure control valve to reduce the pressure supplied to the brake and thereby relieves the tendency to skid. When no control current appears at the pressure control valve, the valve does not interfere with the normal operation of the metering valve 6.
  • the output of the amplifier 4 to the brake pressure valve 5 is monitored by the variation detector 8.
  • the variation detector 8 senses abrupt increases in the current to the pressure control valve and acts instantaneously to reduce the current through the variable bleeder 3, or to prevent any increase in such current. This, of course, under negative acceleration conditions, causes a greater percentage of the current from the acceleration detector 2 to go to the amplifier 4, which may cause a still further reduction in brake pressure if there is a continual tendency to skid. If there is no continued. tendency to skid, the reduction of current through the variable bleeder 3 will result in a slight sustained current through the valve 5. Since any current through the valve produces a corresponding reduction in brake pressure and relieves the tendency to skid, the brake pressure will then be slightly less than that which produced the original tendency to skid.
  • the degree of intensity of the tendency to skid governs the amount of the reduction in brake pressure, so that only slight tendency to skid brings on comparatively slight reduction to brake pressure, Whereas severe slc'dding conditions result in the complete dump, or release of brake pressure for the duration of the skid.
  • the variable bleeder 3 is so designed that successive increases in the current from the amplifier 4 to the brake pressure control valve 5 cause successive increases in the pinch-ofi efl'ect of the variable detector 8 on the variable bleeder 3 and thus upon the current from the acceleration detector 2 to permit greater current fiow to the valve 5. Such action continues to relieve the braking pressure by increments to endeavor to maintain some brake pressure but not to permit the wheel W to go into a skid.
  • variable bleeder 3 will bleed off normal current from the acceleration detector 2 but it becomes what might be termed saturated so that excess current from the acceleration detector flows to the amplifier 4.
  • the variation detector 8 slowly reduces its pinch-ofi effect on the variable bleeder 3 so that an ever decreasing proportion of the current from the acceleration detector is allowed to go to the amplifier 4. This permits the brake pressure to gradually increase, and if the resulting brake pressure results in another tendency to skid, it merely results in another similar series of events. 7
  • FIG. 2 The schematic electrical diagram of one example of the apparatus of the invention is shown in FIG. 2. It will be appreciated that the specific apparatus shown comprises one typical circuit used to perform the functions and controls of the apparatus of the block diagram.
  • the various transistors, resistances, capacitors and the like in the specific circuit and the connections thereof obviously may be varied in sensitivity, in connections and in ratings for difierent control applications, the amplification required, the sensitivity needed etc. Equivalent members, or circuits to those shown may be substituted, when desired.
  • the functions of the variable bleeder 3 and variation detector 8 may be combined in one unit connected across the amplifier 4.
  • the wheel driven generator 1, which acts as a velocity detector is in series with a resistor 9,.
  • the amplifier 4 is a two-stage transistorized amplifier including transistors 14 and 15.
  • Line 13 is connected to the'base of the transistor 14, the collector of which is coupled to the base of the transistor 15 by a resistor 16, and the emitter of which is grounded through a resistor 17.
  • the emitter element of the transistor 15 is connected to a 24 D.C. volt supply 20. V
  • the variation detector 8 includes a transistor 25 the collector of which is coupled to the base of the transistor 21 through a potentiometer 26 and the resistance 24, and whose emitter is grounded.
  • the base of the transistor 25 is biased through a resistor 27.
  • Sensing of variation in current supplied at the brake pressure control valve 5 is provided by a capacitor 28 having one pole connected to the line between the resistor 13 and the solenoid of the valve 5, and having its opposite pole connected to the base of the transistor 25, through a junction diode 29.
  • the bias on the transistor 25 is adjustable and for this purpose a resistor 30 connects the 24 volt supply 20 to ground through a voltage regulator such as a Zener d iode 31.
  • a potentiometer 32 is connected in parallel with the Zener diode 31, which maintains the voltage across the potentiometer 32 constant, for example, at about 7.5 volts even though the supply voltage varies from about 18 to 30 volts.
  • the sliding contact of the potentiometer 32 is connected to the collector of the transistor 25 through a resistor 33 and the potentiometer 26 ,for varying the bias on the collector.
  • a by-pass capacitor 34 is connected from the resistor 27 to ground, and another junction diode 129 connects from ground to the capacitor 28 and diode 29.
  • the capacitor 28, junctiondiodes 29 and 129 and condenser 34 form a pump circuit and normally the capacitors 28 and 34 are of equal value.
  • each pulse of current flowing to the solenoid 19 for the valve 5 provides an increased potential on the capacitor 34.
  • the potential of the capacitor 34 does not remain constant, however, between pulses as it discharges slightly through the resistor 27 and transistor 25.
  • the pump action increases the voltage on the capacitor 34 each time a substantial voltage appears across the solenoid 19.
  • Increases in the voltage on the capacitor 34 in turn produce successive increases in the pinch ofi efiect of the variable bleeder 3 by changing the bias on the base of the transistor 21.
  • FIG. 3 shows a circuit similar to FIG. 2 but wherein a slightly different connection is provided between a variable bleeder 35 provided in the circuit, and the amplifier 36.
  • the emitter 37 of the transistor 38 is connected to the lead extending between transistors 39 and 40 in the amplifier, while the collector 41 of the transistor 38 connects through a resistance 42 to a source of direct current, such as 24 volts direct current indicated at 43.
  • this circuit is connected in substantially the same manner as that shown in FIG. 2, and it functions for control action in the same manner as described hereinabove.
  • FIG. 4 shows that the sensitization of the variable bleeder may come from the output of the amplifier provided in the circuit, and hence a variation bleeder 44 is shown which has a collector 45 of a transistor 46 connected to an output lead 47 of the amplifier 48 in this particular circuit.
  • the emitter of the transistor 46 connects to the ground, or common potential point to which other leads in the circuit are likewise connected, as indicated.
  • ground indicators in the circuits refer to points at common potential. '7
  • An adaptive brake pressure control for controlling the pressure of fluid to a fluid operated brake from a manually operated metered supply, said pressure control comprising an electrically operated pressure control valve having an operating circuit and whose output pressure is a function of the electric current supply to its operating circuit, and a control circuit for said pressure control valve comprising a velocity detector driven by the wheel to be braked and having an electrical power output, an acceleration detector connected to the output of said velocity detector, an amplifier for amplifying the output of said acceleration detector and providing an output current for energizing the operating circuit of said pressure control valve, a variation detector connected to the output of said amplifier for sensing abrupt increases in the current supply to said operating circuit for said pressure control valve, and a variable bleeder connected to the output of the acceleration detector and to said variation detector for control thereby for reducing the current through said bleeder and increasing the current to said operating circuit when such abrupt increases of current occur.
  • An adaptive brake pressure control for controlling the pressure of fluid to a fluid operated brake from a manually operated metered supply, said pressure control comprising an electrically operated pressure control valve having an operating circuit and whose output pressure is a function of the electric current supply to its operating circuit, and a control circuit for said pressure control valve comprising a velocity detector driven by the wheel to be braked and having an electrical power output, an acceleration detector connected to the output of said velocity detector, an amplifier for amplifying the output of said acceleration detector and providing an output current connected to the operating circuit of said pressure control valve for energizing it, a variation detector connected to the output of said amplifier in parallel with said operating circuit for sensing abrupt increases in the current supply to said pressure control valve, and a variable bleeder also connected to the output of the acceleration detector and to said velocity detector for normal current flow therebetween, said variation detector also being connected to said variable bleeder to control the action thereof and for controlling the current through said variable bleeder and increasing the current to said amplifier when such abrupt increases of current occur.
  • An adaptive brake pressure control for controlling the pressure of fluid to a fluid operated brake from a manually operated metered supply, said pressure control comprising an electrically operated pressure control valve having an operating circuit and whose output pressure is a function of the electric current supply to its operating circuit, and a control circuit for said pressure control valve comprising a velocity detector driven by the Wheel to be braked and having an electrical power output, an acceleration detector connected to the output of said velocity detector, an amplifier for amplifying the output of said acceleration detector and providing an output current for energizing the operating circuit of said pressure control valve, and a variation detector and variable bleeder means connected across said amplifier for sensing abrupt increases in the current supply to said operating circuit for said pressure control valve, said variation detector and variable bleeder means being adapted to bleed off restricted amounts of current from said acceleration detector but to permit increased current flow to said operating circuit when such abrupt increases of current occur.
  • an adaptive brake pressure control for controlling the pressure of fluid to a fluid operated brake from a manual y operated metered supply
  • said pressure control comprising an electrically operated pressure control valve having an operating circuit and whose output pressure is a function of the electric current supply to its operating circuit, a velocity detector driven by the Wheel to be braked and having an electrical power output, a condenser connected to the output of said velocity detector for charging action thereby, means connected in the circuit of said velocity detector and said condenser to prevent discharge of said condenser to said velocity detector, an amplifier for amplifying the output of said acceleration detector and providing an output current supplied to the operating circuit of said pressure control valve to energize it, a variation detector connected to the output of said amplifier for sensing abrupt increases in the current supply to said operating circuit for said pressure control valve, and a bleeder circuit means connected to the output of the acceleration detector for normally bleeding limited currents therefrom away from said amplifier, said variation detector being connected to said bleeder circuit means to reduce the current therethrough and increase the current to said amplifier and operating circuit
  • An adaptive brake pressure control for controlling the pressure of fluid to a fluid operated brake from a manually actuated metered supply, said pressure control comprising an electrically operated pressure control valve having an operating circuit and whose output pressure is a function of the electric current supply to its operating circuit, and a control circuit for said pressure control valve comprising a velocity detector driven by the wheel to be braked and having an electrical power output, an acceleration detector connected to the output of said velocity detector, an amplifier for amplifying the output of said acceleration detector and providing an output current for energizing the operating circuit of said pressure control valve, a DC.
  • a variation detector connected to said power source and receiving a current proportional to the output of said amplifier for sensing abrupt increases in the current supply to said operating circuit for said pressure control valve, and a variable bleeder receiving a current proportional to the output of the acceleration detector and to said variation detector for control thereby for reducing the current through said bleeder and increasing the current to said operating circuit when such abrupt increases of current occur.
  • An adaptive brake pressure control for controlling the pressure of fluid to a fluid operated brake from a manually actuated metered supply, said pressure control comprising an electrically operated pressure control valve having an operating circuit and whose output pressure is a function of the electric current supply to its operating circuit, said pressure control valve being connected in the braking system, and a control circuit for said pressure control valve comprising an electric generator driven by the Wheel to be braked and having an electrical power output, a condenser connected to the output of said generator, an amplifier for amplifying the output of said condenser and providing an output current connected to the operating circuit of said pressure control valve for energizirwg it, current variation detector means connected to the output of said amplifier in parallel with said operating circuit for sensing abrupt increases in the current supply to said pressure control valve, and variable bleeder means also connected to the output of said condenser for normal current flow from said condenser to ground, said current variation detector means also being connected to said variable bleeder means to control the action thereof and the current through said variable bleeder means to increase the
  • An adaptive brake pressure control for controlling the pressure of fluid to a fluid operated brake from a manually actuated metered supply, said pressure control comprising an electrically operated pressure control valve having an operating circuit and whose output pressure is a function of the electric current supply to its operating circuit, said pressure control valve being connected in the braking system, and a control circuit for said pressure control valve comprising an electric generator driven by the wheel to be braked and having an electrical power output, a condenser connected to the output of said generator, an amplifier for amplifying the output of said condenser and providing an output current connected to the operating circuit of said pressure control valve for energizing it, current variation detector means connected to the output of said amplifier in parallel with said operating circuit for sensing abrupt increases in the current supply to said pressure control valve, and variable bleeder means also operatively connected to said condenser for normal current flow therefrom to ground, said current variation detector means also being connected to said variable bleeder means to control the action thereof and for increasing the current to said pressure control valve when abrupt increases of current occur.
  • variable bleeder includes a transistor the collector of which is operatively connected to the acceleration detector and the emitter of which is grounded, said variation detector being connected to the base of said transistor to supply a variable voltage thereto dependent upon the current supply to said operating circuit of said pressure control valve.
  • a brake pressure control as in claim 8 where said variation detector includes means therein connected to a DC. power source to supply a fixed reference voltage to the base of said transistor, pump circuit means connected to the output of said amplifier, and a transistor connecting said pump circuit means to said base of said first named transistor to vary the bias thereon.
  • An adaptive brake pressure control for controlling the pressure of fluid to a fluid operated brake, an electrically operated pressure control valve having an operating circuit whose output pressure is a function of the electric current supply to its operating circuit, and a control circuit for said pressure control valve comprising a velocity detector driven by the rotary member being braked and having an electrical power output, an acceleration detector connected to the output of said velocity detector, an amplifier for amplifying the output of said acceleration detector and providing an output current for energizing the operating circuit of said pressure control valve, a variation detector connected to the output of said amplifier for sensing abrupt changes in the current supply to said operating circuit for said pressure control valve, and a variable bleeder connected .to the output of the acceleration detector and to said variation detector for control thereby for changing the amount of current flow through said bleeder and thereby changingthe amount of current flow to said operating circuit.
  • An adaptive brake pressure control for controlling the pressure of fluid to a fluid operated brake, an electrically operated pressure control valve having an operating circuit and whose output pressure is a function of the electric current supply .to its operating circuit, and a control circuit for said pressure control valve comprising a velocity detector driven by the rotary member being braked and having an electrical power output, an accelera tion detector connected to the output of said velocity detector, an amplifier for amplifying the output of said acceleration detector and providing an output current for energizing the operating circuit of said pressure control valve, variable bleeder means between the acceleration detector and the amplifier to bleed ofi current from said acceleration detector, and control means connected between the amplifier and the pressure control valve and responsive to changes in current to the pressure control valve to feed back to the variable bleeder means to incremently change the action of the variable bleeder means.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Regulating Braking Force (AREA)
US97370A 1961-03-21 1961-03-21 Adaptive brake pressure control Expired - Lifetime US3026148A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL275028D NL275028A (nl) 1961-03-21
US97370A US3026148A (en) 1961-03-21 1961-03-21 Adaptive brake pressure control
GB43234/61A GB936603A (en) 1961-03-21 1961-12-04 Brake pressure control
DEG33861A DE1247871B (de) 1961-03-21 1961-12-19 Elektrische Gleit- bzw. Schleuderverhinderungseinrichtung fuer Bremseinrichtungen anFlugzeug-Landeraedern
FR889082D FR1316144A (fr) 1961-03-21 1962-02-23 Dispositif de réglage d'une pression de freinage
CH335162A CH387462A (fr) 1961-03-21 1962-03-21 Dispositif de contrôle automatique de la puissance de freinage d'un frein hydraulique actionné manuellement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US97370A US3026148A (en) 1961-03-21 1961-03-21 Adaptive brake pressure control

Publications (1)

Publication Number Publication Date
US3026148A true US3026148A (en) 1962-03-20

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Application Number Title Priority Date Filing Date
US97370A Expired - Lifetime US3026148A (en) 1961-03-21 1961-03-21 Adaptive brake pressure control

Country Status (6)

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US (1) US3026148A (nl)
CH (1) CH387462A (nl)
DE (1) DE1247871B (nl)
FR (1) FR1316144A (nl)
GB (1) GB936603A (nl)
NL (1) NL275028A (nl)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398994A (en) * 1966-09-14 1968-08-27 Westinghouse Air Brake Co Anti-skid wheel control system for railway cars
US3499689A (en) * 1967-10-09 1970-03-10 Ralph W Carp Antiskid system
US3503653A (en) * 1967-03-13 1970-03-31 Eaton Yale & Towne Velocity sensing anti-skid braking system
US3515439A (en) * 1968-05-01 1970-06-02 Ford Motor Co Automatic control circuit for an antiskid braking system in an automotive vehicle driveline
US3519313A (en) * 1968-01-30 1970-07-07 Trw Inc Anti-skid brake control device
US3522973A (en) * 1967-09-26 1970-08-04 Teves Gmbh Alfred Method of and apparatus for metering angular acceleration
US3524685A (en) * 1968-08-09 1970-08-18 Gen Motors Corp Antilock brake control system
US3563611A (en) * 1967-09-04 1971-02-16 Philips Corp Vehicle brake systems
US3574415A (en) * 1968-08-26 1971-04-13 Rockwell Standard Co Brake system
US3597011A (en) * 1968-05-22 1971-08-03 Girling Ltd Sensing circuit for use in vehicle braking systems
US3598452A (en) * 1967-05-23 1971-08-10 Girling Ltd Means for controlling deceleration of a wheel
US3603842A (en) * 1968-11-07 1971-09-07 Int Standard Electric Corp Acceleration control of machines
US3608979A (en) * 1968-03-06 1971-09-28 Rolls Royce Apparatus for indicating changes in angular velocity, and vehicle braking systems employing such apparatus
US3614174A (en) * 1969-07-22 1971-10-19 Boeing Co Antiskid control system
US3649871A (en) * 1967-09-26 1972-03-14 Teves Gmbh Alfred Method of and apparatus for measuring angular acceleration
US3650575A (en) * 1969-04-14 1972-03-21 Nippon Denso Co Antiskid device
US3652135A (en) * 1968-11-26 1972-03-28 Bosch Gmbh Robert Method and arrangement for preventing the locking of wheels of a commercial vehicle
US3652137A (en) * 1969-03-01 1972-03-28 Itt Antiskid control circuit
US3659907A (en) * 1968-12-09 1972-05-02 Klaus Christ Arrangement for detecting slippage of wheels of vehicles
US3694039A (en) * 1969-12-31 1972-09-26 Tsuneo Kawabe Safety mechanism for brake holder of automotive hydraulic brake system
US4848850A (en) * 1987-09-19 1989-07-18 Sumitomo Electric Industries, Ltd. Antiskid control device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511542A (en) * 1968-01-02 1970-05-12 Kelsey Hayes Co Skid control system including control circuit for a hydraulic modulating valve
JP2734037B2 (ja) * 1988-12-24 1998-03-30 アイシン精機株式会社 アンチロック制御装置

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DE909657C (de) * 1951-09-28 1954-04-22 Wingfoot Corp Antiblockiervorrichtung fuer Fahrzeugbremsen, insbesondere bei Flugzeugraedern
DE1060265B (de) * 1954-08-24 1959-06-25 Goodyear Tire & Rubber Vorrichtung zum Regeln des Bremsdruckes fuer Bremsen von Flugzeugraedern
DE1045242B (de) * 1954-11-10 1958-11-27 Goodyear Tire & Rubber Schleudernverhindernde elektrische Steuerschaltung fuer ein Rad mit einer Bremseinrichtung
DE1088816B (de) * 1956-12-27 1960-09-08 Goodyear Tire & Rubber Vorrichtung zur selbsttaetigen Einstellung des auf ein Landerad eines Flugzeuges ausgeuebten Bremsdruckes
DE1079466B (de) * 1957-03-04 1960-04-07 Goodyear Tire & Rubber Gleitanzeiger fuer blockierte Laufraeder von Fahrzeugen, insbesondere von Flugzeugen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398994A (en) * 1966-09-14 1968-08-27 Westinghouse Air Brake Co Anti-skid wheel control system for railway cars
US3503653A (en) * 1967-03-13 1970-03-31 Eaton Yale & Towne Velocity sensing anti-skid braking system
US3598452A (en) * 1967-05-23 1971-08-10 Girling Ltd Means for controlling deceleration of a wheel
US3563611A (en) * 1967-09-04 1971-02-16 Philips Corp Vehicle brake systems
US3522973A (en) * 1967-09-26 1970-08-04 Teves Gmbh Alfred Method of and apparatus for metering angular acceleration
US3649871A (en) * 1967-09-26 1972-03-14 Teves Gmbh Alfred Method of and apparatus for measuring angular acceleration
US3499689A (en) * 1967-10-09 1970-03-10 Ralph W Carp Antiskid system
US3519313A (en) * 1968-01-30 1970-07-07 Trw Inc Anti-skid brake control device
US3608979A (en) * 1968-03-06 1971-09-28 Rolls Royce Apparatus for indicating changes in angular velocity, and vehicle braking systems employing such apparatus
US3515439A (en) * 1968-05-01 1970-06-02 Ford Motor Co Automatic control circuit for an antiskid braking system in an automotive vehicle driveline
US3597011A (en) * 1968-05-22 1971-08-03 Girling Ltd Sensing circuit for use in vehicle braking systems
US3524685A (en) * 1968-08-09 1970-08-18 Gen Motors Corp Antilock brake control system
US3574415A (en) * 1968-08-26 1971-04-13 Rockwell Standard Co Brake system
US3603842A (en) * 1968-11-07 1971-09-07 Int Standard Electric Corp Acceleration control of machines
US3652135A (en) * 1968-11-26 1972-03-28 Bosch Gmbh Robert Method and arrangement for preventing the locking of wheels of a commercial vehicle
US3659907A (en) * 1968-12-09 1972-05-02 Klaus Christ Arrangement for detecting slippage of wheels of vehicles
US3652137A (en) * 1969-03-01 1972-03-28 Itt Antiskid control circuit
US3650575A (en) * 1969-04-14 1972-03-21 Nippon Denso Co Antiskid device
US3614174A (en) * 1969-07-22 1971-10-19 Boeing Co Antiskid control system
US3694039A (en) * 1969-12-31 1972-09-26 Tsuneo Kawabe Safety mechanism for brake holder of automotive hydraulic brake system
US4848850A (en) * 1987-09-19 1989-07-18 Sumitomo Electric Industries, Ltd. Antiskid control device

Also Published As

Publication number Publication date
FR1316144A (fr) 1963-01-25
CH387462A (fr) 1965-01-31
GB936603A (en) 1963-09-11
DE1247871B (de) 1967-08-17
NL275028A (nl)

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